The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 09, 2015
Filed:
Sep. 05, 2013
Fanuc Corporation, Minamitsuru-gun, Yamanashi, JP;
Yasuyuki Matsumoto, Yamanashi, JP;
Tsutomu Shikagawa, Yamanashi, JP;
FANUC CORPORATION, Yamanashi, JP;
Abstract
A first switching element is connected to one end of a brake and switches from the off state to the on state when a switch command is input to cause a brake drive current to flow through the brake. A second switching element is connected to the other end of the brake and switches from the off state to the on state when the switch command is input to cause a brake drive current to flow through the brake. A voltage detection unit detects a brake voltage being applied to the brake. A switch command delay unit delays the switch command input to the first switching element. A short circuit determination unit determines whether or not a short circuit has occurred in the first switching element based on the brake voltage and the switch command delayed by the switch command delay unit.